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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/pattern/usefulness/slice-pattern-const.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/test/ui/pattern/usefulness/slice-pattern-const.rs | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/test/ui/pattern/usefulness/slice-pattern-const.rs b/src/test/ui/pattern/usefulness/slice-pattern-const.rs new file mode 100644 index 000000000..89195d5b1 --- /dev/null +++ b/src/test/ui/pattern/usefulness/slice-pattern-const.rs @@ -0,0 +1,54 @@ +#![deny(unreachable_patterns)] + +fn main() { + let s = &[0x00; 4][..]; //Slice of any value + const MAGIC_TEST: &[u8] = b"TEST"; //Const slice to pattern match with + match s { + MAGIC_TEST => (), + [0x00, 0x00, 0x00, 0x00] => (), + [84, 69, 83, 84] => (), //~ ERROR unreachable pattern + _ => (), + } + match s { + [0x00, 0x00, 0x00, 0x00] => (), + MAGIC_TEST => (), + [84, 69, 83, 84] => (), //~ ERROR unreachable pattern + _ => (), + } + match s { + [0x00, 0x00, 0x00, 0x00] => (), + [84, 69, 83, 84] => (), + MAGIC_TEST => (), //~ ERROR unreachable pattern + _ => (), + } + const FOO: [u8; 1] = [4]; + match [99] { + [0x00] => (), + [4] => (), + FOO => (), //~ ERROR unreachable pattern + _ => (), + } + const BAR: &[u8; 1] = &[4]; + match &[99] { + [0x00] => (), + [4] => (), + BAR => (), //~ ERROR unreachable pattern + b"a" => (), + _ => (), + } + + const BOO: &[u8; 0] = &[]; + match &[] { + [] => (), + BOO => (), //~ ERROR unreachable pattern + b"" => (), //~ ERROR unreachable pattern + _ => (), //~ ERROR unreachable pattern + } + + const CONST1: &[bool; 1] = &[true]; + match &[false] { + CONST1 => {} + [true] => {} //~ ERROR unreachable pattern + [false] => {} + } +} |